Printing-telegraph.



H.v W. BULL. PRINTING TELEGRAPH. APPLICATION FILED APR. 17, 1908.

923,488. Patented June 1, 1909.

2 SHEETS-SHEET 1.

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H. W. BULL. PRINTING TELEGRAPH.

APPLICATION FILED APR.17,1908.

923,488. Patented June 1, 1909.

2 SHEETS-SHEET 2.

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Specification of Letters Zatent.

Patented June 1, 1909.

Application filed Apr. 17, 188? Serial No. 27,615

To (ZZZ whom it may concern:

Be it known that I, Hmoonn'r ffi Born, a citizen of the United States otfinnerica, re-' siding at pringfiehh in the countycf Hem-p den and dtate of Massachusetts, have invented new and useful improvements in Print'ing-Tlelegraphs, of wl'iich. following a specification. 'lh'i's invention relates to improvements in printing telegraoh systems and it has for its object to provide a transmitting and receiving device, the transmitting device comprising in general a constantly rotating cyl inder, a of keys adapted to engage the cylini'ler, to make and break the main line circuit in accordance withvthe particular letter or characterthat is being transmitted. T he receiving end of the line includes, in general, a rotating, cylinder provided with devices for actuating a series of printing lover's, whereby when said levers are actuated the letters are printed in page form on a sheet of paper which is actuated by any suitable mechanism.

Furtherdetails of the object and nature of the invention will be stated in the specificapartthereof and tion and shown in the drawings forming a particularly pointed out in the claims.

any. special kind of motor. Iniairi in the surface of the cylinder 0. are the metallic contact clocks or nieces which are so arran ed I. J. circuniterentuihy with relation to each other as to form the letters of the alphabet, 53

as for example the two liloclrs at the left of Z, (designated by the letters and it) stand for the letters a and l).

'idesignates a standard that secured to the base-piece j and has pivot-ally mounted secured on opposite sides thereof spring lingers s and s to hold' the trailing lever 7c in Contact either with or away from, the sending roller a. When the key-lever is depressed. the inner end of the trailing lever It is brought into contact with the transmitting rollerc,

whereby an electrical impulse is sent over the line i its inner end passes over the blocks 9 or 72., the current flowing from the battery it to the shaft 1) on which the levers This I' In the drawings forming part of t his'applik are pivoted; then through the trailing cetion,-Figurc 1 is a transverse sectional levers Jr to the contact-blocks, and from view on the. line 1l of Fig. 2, the key 1 there to the shaft (Z which is connected to lever mechanism being shown in side elevathe line if, as shown; and as the lever engages tion. Fig. 2 is ageneral diagrammatic-view the cont-achblocks in succession, the current of the system as a whole, while Fig. 3-is will be made and broken on the line in a 96 a detailed. plan view of the trailin lever cordance-with the letter or character that construction whereby the sanie is heir either to he transmitted, as readily understood. in engagement M1, or disengaged from, the When the trailing-love Fcreachcs the end. sending cylinder, Fig. 4 is a detail sectional of' the contact-block, for instance 9, its

view on the line 4 4 of Fig. 3, showing the inner end engages projection '21) causing the spring fingers for holding the trailing lever same to he elevated'clear of the rotating in contact with, or disengaged from, the cylinder c to its initi ocsition and thus presending cylinder. ;Fig. 5 isa modification vent a repetition of .sign al without deshowing means tor}- rnoving the receiving pressing the tiansmittihg key a second cylinder lrzni .l and 5 is a detail time.

Referring now to the receiving station of! the apparatus: a: designates a rotating cylinder provider with a ries of projections '5' that are arranged in spiral relation on the 7 surface the cylinder 0: which is connected; by means at the shaft to the motive power which is prehrahly a spring inotor and is of the some construction as that referred. to above in it 'mnection with the 1notivc power for the c iind r o. These two uioto s 11! view of thornoi lid bearing block in which is; incur-.1 ed the trait oi the receiving cylin- 6 of liig. 5. E to the drawing. in detail, (1 cylinder imido oi some suitable i Uliiitiflilh w hard rubber, that is minted ion in the hearings 7) and 0, Y

the sh; t .lu-rcol' beingconnected to asuitable nit-Lire owner a w )roicrahlv :1 rin ,zi motors-" alroougg; .a do hunt .Inyscll to are desi ned to rotate at the same speed so that each cylinder will be moved through the same are atequal times.

3 designates an electro-magnet of. the horsedrawn laterally toward the pole'pieces of the electro magnet at each energization of the In order to permit a lateral movement of the cylinder the shaft 2 is provided with a pin 5 which engages slots 6 in the cylinder :0 and at the same time causes the cylinder x to be driven from the shaft 2.

A spring 7 has one end attached to the cylinder :v and its other end .to the shaft 2 whereby the cylinder is constantly drawn away from the electro magnets 3 and into engagement with the stops 8 that are carshaft 2.

ried by the shaft .2. In order to prevent the armature sticking to the pole-pieces of the electro-magnet, a pin 9 is carried by the 10 designates a series of printing levers that are pivotally mounted on the shaft 11 which is carried by suitable standards 12.

13 designates a sheet of paper that is I. moved laterally and longitudinally by any suitable mechanism well knownin the typewriting artso that the message, when receivcd will be printed thereon in page form.

ln'thc normal operation of the cylinder 00, the inner ends'of the printing levers 10 will pass between the projections y, butwhen the impulse which produces a letter or character is transmitted over the line, the lateral movement of the cylinder, as described, will take place when a projection y engages the inner end of the printing lever to effect the printing of the desired charz'ictcr or letter on the sheet of paper 13. T he spiral urrangeiuent of the projections'y is for the purpose of permitting the impulse, which produces a character, to be transmitted. without effecting the printing of a wrong character. It should be stated that the rotation of the cylinder w is so timed: ihat the character will not be printed until i 'ter the impulse of which the character is inent of the receiving cylinder n: by which the composed is transmitted over the line.

, I have not described any spcciiic means for simultaneously starting and stopping the motors s and 2 which. drive the cylinders a anclzr in unison, as this fcatureywhich relates to synchronizingdevices, is old in the art of printing 'telcgraphs and need not he referred to here in detail. The essential feature of my inventionlics in the lateral or :1 xial moveelcctro magnet is energized by the line rurrent, where by the printin is effected by rim "2 printing levers, asjdescribcd.

I do not limit myself to the means shown for efiecting the printing, as I may rovide an alternate arrangement for effecting the lateral movement of the levers 1.0 instead of the cylinder 00. Neither do I limit myself to if desired an ordinary Morse sounder may be substituted for the receiving mechanism shown.

I do not limit myself to the arrangement of contact blocks on the transmitting cylinderja, as I prefer to arrange thein in: spiral form, as shown.

Referring now to, the modification shown in Fig. 5, the transmitting and receiving cylinders are the same in construction as already described. The receiving cylinder 14 is mounted'in the slidable hearing blocks 15 on the guide or track-way 16. 17 designates a post to which is'connected a spring 18 norimally under tension for holding the bearing blocks 15- rearwardly toward the stops 19, the spring having its other end connected to a post 20 on the bearing blocks 15. 21 designates two electro magnets that are mounted on the guide or track-ways 16 and are connected to the line circuit t by means of the wires 22 and23. This connection is made-in parallel arrangement with the line and groundwhich is indicated at 24.- The purpose of this parallel connection is such that at every electrical impulse over'the line i both magnets will be simultaneously energized and the cylinder 14 thereby drawn forward toward the printing levers 10. The inner ends of the printing levers will then be struck by the elevated blocks 'y and the printing effected. In order to ermit the cylinder 14 to be readily drawn orward by the magnets 21', the shaft thereon is connect: cd' to the motor 2 by means of the flexible shaft 25. After the letter is rinted and the electrical impulse ceases to ho d the receiving cylinder forward, the springs 18-will immediately pull the cylinder back again against the stops19f I.

What I claim, is

inder of a printing telegraph ap aratus, a series of keydeve'rs, a series ofijtrai glevers operable from thekeydevers for moving the trailing levers into engagement with the inder being provided with contact ieces representing thelletters of the alphaliet, a line circuit, a receiving cylinder, a series of projections secured to the receiving cylinder, a series of printing levers arranged so that their inner ends normally ass the series of rojec- I tions, and means un er the'control of t e line circuit for moving the receivi cylinder so that the projections thereon fil engage the printing levers to print the letter corres 0nding to the transmitted letter, a source o electrical energy, and electricalponnections bethe employment of any particular code, but

1 In combination with atransmitting cyl-.

transmitting cylinder, the transmitting eyl-' tween the source of electrical energy and the line circuit; v 2. An epperetusnf' the class descnbed, line circuit, enelectro megnct included there- -'in, a, receiving cylini'ler, enermnture carried thereby,-

means fer transmitting electrical impulses predetermined distance upcn the transmission ofelectricel im )ulses over the line, and

.icirciiit, whereby Y sent-m the char-setegzere transmitted, 8816;

means cnrrietl by t e-receiving cylinder to. effect the printing of the transmitted-charac ms, 4. A printing telegraphsystem having, in combination: with the receiving cylinder, thereof, a linecircuit -n transmitting cylini der, e u transmittingcylinder, a series of levers for making the line circuit, projectionslocetezl niljeccnt the content-pieces representing the c'lntrccters to be transmitted for hreakingthc l series (it contact pieces carried by; the i eeeese when the impulses reprepre iections will dis'enge e the levers from contact with the transmitting cylinder, and means for efi'ecting the printin of the transmitted characters I line.

5. A printing telegraph system having in combinations transmitting cylinder, a re--- meens for rotating said 0 l"-' finders 1n unisen, means for effecting movement of the ceiving cylinder,

t e receiving cylinder at each transmission of an magnetic apparatus, for effecting movement of'the receiving cylinder, as (le801'lb6d.

6. In an apparatus of the class described,

a line circuit, en elcetre megnet. included cylinder, en armature therein, a receiving. -carried thereby, means for transmitting electricel impulses over the line, end-"means for permitting the receiving cylindertdhe axially movedby the electro magnet at each impulse, te-efiect the printing of tiidiesired character or letter, as described. JHARCOURT W.- BULL.

Witnesses: i

K. I. CLEMGNS,

- H; W. Bowen.

et the receivmg emi of the electrical impulse-over the line circuit, said menns'mcludmg an electro- 

